pluto

pluto · verb¹

Originally coined in 2006 by the American Dialect Society, in reference to Pluto's demotion from planet status, defeating climate canary for Word of the Year.

Pluto · proper noun²

1. Ancient Greekπλοῦτος (ploûtos)
2. Ancient GreekΠλούτων (Ploútōn)
3. LatinPlūtō
4. Middle EnglishPluto
5. English todayPluto

From Middle English Pluto, Pluton, from Latin Plūtō, from Ancient Greek Πλούτων (Ploútōn, “god of the underworld”). Doublet of Plouton. Venetia Burney is often credited as having suggested the name for the celestial body.

First known use, by meaning

• from 1930 The largest dwarf planet and formerly the ninth planet, represented by the symbol ♇ or ⯓, both now used mostly in astrology.